[67/92] ram: rk3399: Map chipselect for lpddr4
diff mbox series

Message ID 20190611145135.21399-68-jagan@amarulasolutions.com
State New
Headers show
Series
  • ram: rk3399: Add LPDDR4 support
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Commit Message

Jagan Teki June 11, 2019, 2:51 p.m. UTC 
Assign desired cs_map values for lpddr4 during set memory map.

Initial cs_map values is based on the sdram parameters, so
the same will adjusted based dramtype as LPDDR4.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
---
 drivers/ram/rockchip/sdram_rk3399.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Patch
diff mbox series 

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index 13c552649c..ecc215b9c7 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -189,6 +189,16 @@  static void set_memory_map(const struct chan_info *chan, u32 channel,
 	clrsetbits_le32(&denali_pi[155], (0x3 << 16) | (0x7 << 24),
 			((3 - sdram_ch->cap_info.bk) << 16) |
 			((16 - row) << 24));
+
+	if (sdram_params->base.dramtype == LPDDR4) {
+		if (cs_map == 1)
+			cs_map = 0x5;
+		else if (cs_map == 2)
+			cs_map = 0xa;
+		else
+			cs_map = 0xF;
+	}
+
 	/* PI_41 PI_CS_MAP:RW:24:4 */
 	clrsetbits_le32(&denali_pi[41], 0xf << 24, cs_map << 24);
 	if (sdram_ch->cap_info.rank == 1 && sdram_params->base.dramtype == DDR3)